Fixup for e4bc8990 (#8955)
HttpSource.fetchImage() uses Call.asObservableSuccess(), which
cancels the call on unsubscribe. This causes the call to be cancelled
before it is used, leading to a "java.net.SocketException: Socket is
closed" when trying to use the response in putImageToCache().
To fix this, use Call.awaitSuccess() via a new HttpSource.getImage()
suspending function. This addition to source-api is only intended for
app use, so it will not be added to the extensions-api stubs.
* Add methods to get manga and chapter url
Some fork supports directly opening chapters with webview hence `getChapterUrl`
* Review Changes
* Add since to javadoc
* Add support to update strategy.
* Add JavaDoc and bump the LIB_VERSION_MAX constant.
* Fix a word typo.
* Store update strategy enum as integer in the DB.
